Add Audio to Video Online Free
Add background music, voiceover, or custom audio tracks to your video files online for free. Supports MP4, AVI, MOV, and more.
How It Works
- 1
Upload video
Upload your video file.
- 2
Upload audio
Upload the audio track you want to add.
- 3
Adjust settings
Set volume levels and audio timing.
- 4
Download video
Download your video with the new audio track.
Key Features
- Supports MP4, AVI, MOV, MKV, WebM and more
- Real-time preview before processing
- Batch processing for multiple files
- Adjustable quality settings
- Direct cloud storage upload
- Lightning-fast processing engine
Why Choose Our Tool
✓Free, no registration required
✓Secure file processing
✓Works on all devices
✓No software installation needed
✓Fast processing speed
✓High-quality output
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Add Audio to Video Online
Add or replace audio in your videos. Upload music or voiceover to enhance your video.
📹 Video File
🎥
Drop video here
or click to browse
MP4, MOV, AVI, MKV, WebM
🎵 Audio File
🎵
Drop audio here
or click to browse
MP3, WAV, AAC, FLAC, OGG, M4A
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Support all audio formats
Replace, mix, or add audio to your video
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Replace or mix options
Adjust mix balance for perfect sound
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Volume adjustment
Support for all major audio formats
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Audio sync tools
Auto-sync audio length to video duration